Process for the manufacture of impregnated gloves.



UNITED STATES PATENT OFFICE.

CARL WEILBIER, OF HANOVER, GERMANY.

PROCESS FOR THE MANUFACTURE OF IMPREGNATED GLOVES.

Specification of Letters Patent.

Patented July 10, 1906.

To all whom it may concern:

Be it known that I, CARL WEILBIER, a sub- {get of the German Emperor, residing at anover, in the Kingdom of Prussia, and in the Empire of Germany, have invented certain new and useful Improvements in Processes for the Manufacture of Impre ated Gloves Which are Insulated Against E ectric Currents, of which the following is a specification.

This invention relates to the manufacture of gloves for the use of electricians; and the object of the invention is a process for impre ating chamois-leather or other suitable similar or equivalent skin, hide, or other material of winch said gloves are made, which without rendering it entirely impervious to moisture shall constitute an effective insulation against the passa e of the electric current of seven hundre volts or more, and thereby protect the wearer of such gloves from danger by touching electric conductors or charged electric bodies.

The skin, hide, or leather, and especially chamois-leather, out of which the gioves have been made is boiled, if necessary, in a strong aqueous solution of soda in order to free it from fatty materiais, if an that it may contain. There are next ta en accurateiy or approximateiy eight hundred (800) arcs of iron sulfate (green vitriol) and five undred and seventy-six (57 6) grams of sodium nitrate (soda saltpeter) dissolved in one thousand (1 000) and seven hundred (700) grams respectively of boiling water and two hundred and fty grams of sulfuric acid mixed with four hundred rams of water. The three solutions are a lowed to cool. These three thus cooled solutions are then mixed together and the resulting mixture or compound solution boiled until there results a dark-red viscid mass which gives off by heating a red vapor. In a twenty to twentyfive per cent. aqueous solution of this resulting mass the gloves are boiled until they are thoroughly imbued therewith, after which they are rinsed in water and then dried, whereupon they are then ready for use for the purgose for which they were intended.

What I claim as my invention is The niethod of insulating gloves consisti in impregnating them Wi 7 a compcun aqueeussolution of iron sufate sodium nitrate and sulfuric acid repared by separately dissoiving these on stances in water, cooling and mixing the soiutions, boilin the mixture to a viscid mass and again disso ving it in boiling water.

In Witness whereof I have signed this specification in the presence of two witnesses.

CARL WEILBIER. Witnesses:

Lnon'oan RASOH, ANNA DrPrnL. 

